Solubility reciprocal

The high solubility of the salt and resultant low water vapor pressure (58) of its aqueous solutions ate usehil ia absorption air conditioning (qv) systems. Lithium bromide absorption air conditioning technology efficiencies can surpass that of reciprocal technology usiag fluorochlorocarbon refrigerants. 

The enthalpy of the phase conversion can be determined from Eq.(6) by plotting the log of the absorption or desorption plateau pressure, P lnleau, against the reciprocal temperature as indicated in Fig. 2. When the solubility of hydrogen in the metal (or) phase is small, then AHplM AH(, where AH( is essentially the enthalpy of forma... 

Figure 11 Van t Hoff plot of log solubility of methylprednisolone in water as a function of reciprocal water temperature. (Reprinted with permission from Ref. 47.)...

Also, hydrates are more soluble in water-miscible solvents than are the corresponding anhydrous forms. For example, the solubility of caffeine hydrate is lower than that of anhydrous caffeine in water but higher in ethanol. The maximum concentration seen may be due to the solubility of the anhydrous crystalline phase or due to a temporary steady state in which the rate of dissolution of the metastable anhydrous form and the rate of crystallization of the stable hydrate are equal. The decreasing concentration represents crystallization of the stable hydrate from a solution supersaturated with respect to it. If the maximum concentration of the solute in the dissolution experiment corresponds to the solubility, then the initial increase in concentration follows the Noyes-Whitney equation [15]. Van t Hoff plots of log solubility versus the reciprocal of temperature give linear relationships (Fig. 16). 

Figure 16 Van t Hoff plot of molal solubility versus reciprocal absolute temperature for theophylline in water. (Reproduced with permission from Ref. 50.)...

FIGURE 2.1.1.1.4.1 Logarithm of mole fraction solubility (In x) versus reciprocal temperature for 2-methylbutane. 

FIGURE 3.1.1.7.1 Logarithm of mole fraction solubility and Henry s law constant versus reciprocal temperature for 1,2,3-trimethylbenzene. 

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